Mill disk



G. GARZA MILL DIsx Oct. 6, 1925 Filed June 4, 1925' 2 Sheets-Sheet 1 l..l. 11H/'116.11111 11. 1/1. u G/r/ll/l/.nli 11.......11 VII/11117.. 6...

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111W, i. No A Qwntoz f' 61610 Garza.

Gttoznupy Oct- 6, 1925;

25 ,14 Z3 JZ Z7 P. G. GARZA MILL msx Filet? June 4, 1.925

2 Sheecs-ShgeetA 2 314mm to@ Ihse-6,323 l Patented Oct. 6, 1925.

UN1TEDsTATEs 1,555,325 PATENT OFFICE.

:PABLO GONGALES GARZA, OF sAN ANTONIO, TEXAS.

MILL msx. l

Application led June 4, 1925. Serial' No. 34,968.

This invention aims to rovide a disk which willv be peculiarly e cientin grinding wet cereals, the disk being of peculiar utility in preparingdough for tortillas and similar viands.

It 'is within the province of the disclosure to improve generally and toenhance the utility of devices of that sort to which the inventionappertains.

Although a preferred form khas ybeen shown, a mill-wright, workingwithin the scope of what is claimed, may make such alterations as hisskill may suggest, without departing from the spirit of the invention.

In the drawings Figure 1 is a face view of a grinding member constructedin accordance with the invention; Figure 2 is a section on the line 2-2of Figurel; Figures 3, 4 and 5 are sections taken, respectively, on thelines 3 3, 4--4 and 5-5 of Figure 1; Figure 6 is a section on the line6-6 of Figure 1.

The grinding memberv forming the subject matter of this applicationincludes a sup port 1 which may bein the form of a disk.

vThe support 1 has an outer annular offset rib 2 and a similar inner rib3. The ysupport 1 is provided with a hub 4. The hub 4 has an opening 5adapted to receive means, not shown, whereby the support 1 may beconnected to a `rotatable shaft, likewise not shown. lAngle brackets 6are formed in-` tegrally with the support 1. The brackets 6 have fingersor blades 7 provided with cutf ting edges 8.

A main disk 9 'is mounted on the ribs 2 and 3. The disk 9 has a centralopening 10. About the opening 10, the disk 9 is providedv with an'annular rib Y,11. An intermediate ring 12 surrounds the rib 11 and issupported on the disk 9. An outer ring 14 isy disposed about theintermediate ring 12 and is. supported on the disk 9. The ledges Sof thefingers 7 on the brackets 6 are disposed at the periphery ofthe ring 14and are located .about at right angles to the working vsurfaces of theparts 14, 12 and 11. Securing elements 15, such as bolts, `connect theparts 12-9-1 and 14-9-1.

On the Working surface of therib A11 there are transverse grooves 16.-The grooves 16 extend asat 17 across the edge of the opening 10. Thegrooves' 16 are suba stantially' V-shaped in plan. The narrower endsofthe grooves 16k are disposed toward the periphery of the grindingmember'.v

Each groove 16 comprises a'wall 18 disposed ata pronounced angle to theworking surface of the rib 11, and the wall 19 Vdisposed l at a lesspronounced angle to the working surface of the rib 11. The groovesdiminish in depth as they extend outwardly. There are similar grooves 22in the intermediate ring 12 and similar grooves 23 in the outery ring14. Owing to the fact that the grooves diminish in depth as they extendoutwardly, a shoulder 26 is formed at the pointwhere the shallower outerend of the groove 16y communicates with the deeper end of the groove 22,and a shoulder 27 is formed at the place where the shallower outer'endof the groove 22 communicates with the deeper inner end of the groove23. The grooves 16, 22 and 23 may be described as parts of v a maingroove extended outwardly on a curve from the central opening 10 towardthe periphery of the grinding member, the

. more abruptly 'inclined walls, such as the wall 18, of the said partsof the main O'roove beingl -in longitudinal alinement, as Figure 1 willclearly show when compared with Figure 6. 'Between the grooves 16k thereare flat surfacesv 20, there being similar surfaces 24 between thegrooves 22, and similar surfaces 25 between the grooves The fiatsurfaces above 'mentioned are roughened, preferably by intersectingcreases 421. Y

-The main grooves,'which are composed of the parts 16, 22 and 23,gradually diminish in depth from their inner ends tovtheir Outer endsand this construction, notably in combination ,with other details of thedevice, produce a finely ground product. The creases 21, crossing eachother at an angle, produceavroughened surface which has a file-likeeffect on the product and grind it with corresponding rapidity andfineness. Owing tothe relative slope of the walls18 and 19, the product,as it is being ground, not only is carried outwardly toward theperiphery. of the grinding member, but4 is allowed to move, also, in acircumferential direction, thus working its way overV the grindingsurfaces 20, 24 and 25.. VVVThe shoulders at 26 and 27 retain thematerial which has been already triturated to some extent and produce amixing of the material, between the stages of grinding, as the materialmoves outwardly toward the periphery of the grinding member. The parts14, 12 and 11 may be renewed individually when worn, since they aredetachably mounted on the part l by the securing elements 15. Certain ofthe grooves 23 on the ring la are individual to that ring only, and thesaid ring is the one which is subjected to most friction. This ring,being the outer ring, may be removed and replaced quickly. The fingersor blades 7, with their cutting edges 8, break up and separate thematerial as it leaves the periphery of the grinding member. 'lhe deviceshown and described may be used with any suitable kind of acomplementary disk, not shown.

l. A grinding member provided with a central opening and equipped in itsworking surface with grooves which extend across the edge of the openingand outwardly toward the periphery or the grinding member, each groovebeing made up of a plurality of parts, each of said parts being ofsubstantially il-shape in plan, the narrower ends of the parts of thegrooves being disposed toward the periphery of the grinding member',each part of the groove comprising a wall disposed at a pronounced angleto the working surface of the grinding member, and a wall disposed at aless pronounced angle to the working surface of the grinding member,the. parts of the groove diminishing in depth as they extend outwardly,thereby to form ashoulder at the point where the shallower outer end ofeach of said parts communicates with the deeper inner end of anadjoining one of said parts, there being flat surfaces between the saidparts of adjoining grooves, the flat surfaces being roughened byintersecting slits, the rst-speciiedy walls of the parts of the groovesbeing in longitudinal alinement, and there being projecting blades atthe periphery of the grinding member, the blades having sharpened edgesdisposed approximately at right angles to the working surface of saidmember and located closely adjacent to the periphery of said member.

2. A grinding member provided with a central opening and equipped in itsworking surface with grooves which extend across the edge of the openingand outwardly toward the periphery of the grinding member, each groovebeing made up of a plurality of parts, each of said parts beingsubstantially V-shaped in plan, the narrower ends of the parts of thegrooves being disposed toward the periphery of the grinding member, eachpart of the groove comprising a wall disposed at a pronounced angle tothe Working surface of the grinding member7 and a wall disposed at aless pronounced angle to the working surface of the grinding member, theparts of the groove diminishing in depth as they extend outwardly,thereby to Vform a shoulder at the point wherein the shallower outer endof each of said parts communicates with the deeper inner end of anadjoining one of said parts, there being i atsurfaces between the saidparts of adjoining grooves, the fiat surfaces being roughened, and thefirst-specified walls of the parts of the grooves being in longitudinalalinement.

grinding member equipped in its working surface with grooves whichextend from a point adjacent to the center of said member outwardlytoward the periphery thereof, each groove being made up of a pluralityparts, each of said parts being of substanrlly V-shape in plan, thenarrower ends of the parts of the grooves being disposed toward theperiphery of the grinding member, each part of the groove comprising awall disposed at a pronounced angle t-o the working surface of thegrinding member, and a wall disposed at a less pronounced angle to theworking surface of the grinding member, the parts of the groovediminishing in depth as they extend outwardly, thereby to form ashoulder at the point where the shallower outer end of each of saidparts communicates with the deeper inner end of an adjoining one of saidparts, there being fiat surfaces between the said parts of adjoining'grooves, the fiat surfaces being roughened by intersecting slits, thefirstspecied walls of the parts of the grooves being in longitudinalalinement, and there being projecting blades at the periphery of thegrinding member, the blades having sharpened edges disposedapproximately at right angles to the working surface of said member andlocated closely adjacent to the periphery of said member.

4L. ri grinding member equipped in its working surface with grooveswhich extend from a point adjacent to the center of said memberoutwardly toward the periphery thereof, each groove being made up of aplurality of parts, each of said parts being of substantially V-shape inplan, the narrower ends of the parts of the grooves being disposedtoward the periphery of the grinding member, each part of the groovecomprising a wall disposed at a pronounced angle to the working surfaceof the grinding member, and a wall disposed at a less pronounced angleto the working surface of the grinding member, the parts of the groovediminishing in depth as they extend outwardly, thereby to form ashoulder at the point where the shallower outer end of each of saidparts communicates with the deeper inner end of an adjoining one of saidparts, therebeing flat roughened surfaces between said parts ofadjoining grooves, the irst-speciiied walls of the parts of the groovesbeing in longitudinal alinement.

5. A grinding member equipped. in its working surface with grooves whichextend from a point adjacent to the center of said member outwardlytoward the periphery thereof, each groove being made up of a pluralityof parts, each of said parts being of substantially V-shape in plan, thenarrower ends of the parts of the grooves being disposed toward theperiphery of the grinding member, each part of the groove comprising awall disposed at a pronounced angle to the working surface of thegrinding member, and a wall disposed at a less pronounced angle to theworking surface of the grinding member, the parts of the groovediminishing in depth as they extend outwardly, thereby to form ashoulder at the point where the shallower outer end of each of saidparts communicates with the deeper inner end of an adjoining one of saidparts, the firstspecified walls of the parts of the grooves being inlongitudinal alinement.

6. A grinding member equipped in its working surface with grooves whichextend from a point adjacent to the center of said member outwardlytoward the periphery thereof, each groove being made up of a pluralityof parts, each of said parts being of substantially V-shape in plan, thenarrower ends of the parts of the grooves being disposed toward theperiphery of the grinding member, each part of the groove comprisinglongitudinal walls, the parts of the groove diminishing in depth as theyextend outwardly, thereby to form a shoulder at the point where theshallower outer end of each of said parts communicates with the deeperinner end of an adjoining one of said parts, corresponding longitudinalwalls of the parts of each groove being in longitudinal alinement. 7 Agrinding member equipped in its working surface with grooves whichextend from a point adjacent to the center of said member outwardlytoward the periphery thereof, each groove being made up of a pluralityof parts, each of said parts being of substantially V-shape in plan, thenarrower ends of the parts of the grooves being disposed toward theperiphery of the grinding member, the parts of the groove diminishing indepth as they extend outwardly, thereby to form a shoulder at the pointwhere the shallower outer end of each of said parts communicates withthe deeper inner end of an adjoining one of said parts. 8. A grindingmember constructed as set forth in claim 7 and further characterized bythe provision of blades including ysharpened edges located at theperiphery of said member, and disposed about at right angles to theworking surface of said member.

9. A device of the class described, constructed as set forth in claim 7,and further characterized by the fact that the grinding member comprisesa support, detachable annular elements whereon the respective parts ofthe grooves are located, and securing devices connecting said elementswith the support.'

In testimony that I claim the foregoing as my own, I have hereto aiiixedmy signature. 1

PABLO GoNGLEs GARZA.

